OMAHA

Which sensors should i get to do this? Denso of course but what specific sensors do i need? Any thing else do i need?

Superfast1

There are 4 O2 sensors, 2 upstream (before cat) & 2 downstream (after cat) sensors on each bank. Why are you changing them? You'll need to give us more info so we can help you.

Moarpower

Pretty sure he just wants part number. Anyone know ow if they are the same as on a 90? Pretty sure the are different.

OMAHA

i believe i melted a cat.... or its clogged, or both....lol... so i figured i may as well replace both cats and O2s....

OMAHA

I see some densos on rock auto and was wondering which ones to get.....Lexus quoted me $4200 just for parts

Moarpower

Geez I built a whole new exhaust including cats and o2 sensors for 400 bucks.

Superfast1

Stay away from the stealer & go w/ Rockauto. I've purchased tons of parts from this online store for years. They have very good price & good selection of parts based on how much you want to spend. In regards to the O2 sensors & cats, you can't go wrong w/ Denso as it's OEM & you can go w/ aftermarket cats i.e. Walker, Magnaflow, etc... but make sure it's legal in your state.

OMAHA

So i need a total of 4 upstream and 4 downstream sensors for 2 catalytic converters..... this costs more than i initially thought!!

Moarpower

No man you only need 2 of each.

OMAHA

Thanks for the input....i believed that i needed to order 2 upstream and 2 downstream O2sensors for each cat. That's how i came up with 8 total....lol

Amskeptic

Total of four for the vehicle.
Two upstream (one left and one right) and two downstream (one left and one right). Math quiz on Monday.
Colin

OMAHA

Thanks for the input people....i ordered EASTERN catalytic converters ($143×2) and DENSO upstream O2 sensors ($54×2) and DENSO downstream O2 sensors ($60×2)..... So far so good!

Superfast1

Now call a few local muffler shops for price. It should be around $100 to get them install assuming the exhaust pipes & mufflers are still in good shape. For the new O2 sensors, make sure you screw them in first then hook up the connectors, otherwise the wires will twist on you. Good luck.

RA40

iTrader: (6)

For other's buying O2 sensors, check Amazon too. I just bought some Denso bank 1 sensors for $45/each. They had a prior sale I missed out on and that price was $39.98

OMAHA

good info!!